About Periodic Fever Syndromes

Periodic Fever Syndromes are a group of very rare and chronic autoinflammatory diseases that can affect both children and adults. Periodic Fevers are caused by mutations that affect the immune system. These mutations trigger an inflammatory response that can cause symptoms including fever, rash, painful muscles and/or joints, and others.

Several different disorders fall within this group of inherited diseases. And although there are slight differences between them all, the symptoms they cause can be very similar and hard to distinguish. As a result, many people with these diseases are diagnosed with Undefined Periodic Fever Syndrome.

ILARIS® is the first and only biologic that's FDA approved to treat the following four types of Periodic Fever Syndromes:

Tap or click above to learn more about these diseases, and how ILARIS works to treat each one.